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HepRep/WIRED

Geant4 Visualization & GGE Demo. Joseph Perl, SLAC. HepRep/WIRED. DAWN. OpenGL. Contents. OpenGL RayTracer ASCIITree VRML HepRep/WIRED3 DAWN DAWNCUT GGE (Geant Geometry Editor, part of MOMO). Other Tutorial Materials.

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HepRep/WIRED

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  1. Geant4 Visualization & GGE Demo Joseph Perl, SLAC HepRep/WIRED DAWN OpenGL Visualization & GGE Demo J. Perl

  2. Contents • OpenGL • RayTracer • ASCIITree • VRML • HepRep/WIRED3 • DAWN • DAWNCUT • GGE (Geant Geometry Editor, part of MOMO) Visualization & GGE Demo J. Perl

  3. Other Tutorial Materials • This presentation can be used on its own, but gives the most comprehensive introduction to Geant4 visualization when used as part of the following full set of documents: • Geant 4 Tutorial • Introduction to Geant4 Visualization • Geant4 Workshop Visualization Tutorial using the WIRED3 Event Display • Geant4 Workshop Visualization Tutorial using the DAWN Event Display • Geant4 Workshop Visualization Tutorial using the OpenGL Event Display • Some other Geant4 visualization drivers not discussed here simply because the present author is not an expert with them: • OpenInventor • VRML Visualization & GGE Demo J. Perl

  4. Tutorials Visualization & GGE Demo J. Perl

  5. OpenGL • With OpenGL, all commands go through Geant4: vis/open OGLIX /vis/scene/create /vis/scene/add/volume /vis/sceneHandler/attach /vis/viewer/flush /vis/viewer/set/viewpointThetaPhi 70 20 /vis/viewer/zoom 2 /vis/viewer/reset /vis/viewer/set/viewpointThetaPhi 40 40 /vis/viewer/panTo -5 -1 /vis/viewer/zoom 4. /vis/scene/add/trajectories /vis/scene/add/hits /tracking/storeTrajectory 1 /run/beamOn 1 Visualization & GGE Demo J. Perl

  6. RayTracer • Run directly from Geant4 • /vis/open RayTracer Visualization & GGE Demo J. Perl

  7. ASCIITree • ASCIITREE is a visualization driver that is not actually graphical, but that dumps the hierarchy as a simple text tree. • /vis/open ATree • /vis/viewer/flush • "worldPhysical":0 • "magneticPhysical":0 • "firstArmPhysical":0 • "hodoscope1Physical":0 • "hodoscope1Physical":1 (repeated placement) • "hodoscope1Physical":2 (repeated placement) • "hodoscope1Physical":3 (repeated placement) • "hodoscope1Physical":4 (repeated placement) • Can be set to various levels of detail • /vis/ASCIITree/verbose <verbosity> • 0: prints physical volume name. • 1: prints logical volume name. • 2: prints solid name and type. • 3: prints volume and density of solid. • 4: calculates and prints mass(es) of volume(s) in scene. • By default, shows only daughters of first placement and not repeat replicas. • Add 10 to the above to also show repeated placements and replicas. Visualization & GGE Demo J. Perl

  8. VRML • Geant4 creates VRML File • /vis/open VRML2FILE • View file in a VRML Browser • Many free options, demo today is using one from octaga.com Visualization & GGE Demo J. Perl

  9. HepRep / Wired3 • Geant4 creates HepRepFile • /vis/open HepRepFile • View file in WIRED3 or FRED HepRep Browsers • WIRED3 can export to various graphics formats Visualization & GGE Demo J. Perl

  10. DAWN • Geant4 creates .prim file • /vis/open DAWNFILE • DAWN renders .prim file into PostScript • View or print from your favorite PostScript application Visualization & GGE Demo J. Perl

  11. DAWNCUT and DAVID • A standalone program, DAWNCUT, can perform a planar cut on a DAWN image. • DAWNCUT takes as input a .prim file and some cut parameters. Its output is a new .prim file to which the cut has been applied. • Another standalone program, DAVID, can show you any volume overlap errors in your geometry. • DAVID takes as input a .prim file and outputs a new .prim file in which overlapping volumes have been highlighted. • Details at http://geant4.kek.jp/~tanaka/ Visualization & GGE Demo J. Perl

  12. GGE • GGE – the Geant Geometry Editor is one part of a Java application called MoMo. Momo contains: • Materials Editor • Geometry Editor • GAG (G4 Adaptive GUI) • Physics List Editor • All three are JavaGUI interfaces thathelp you to generateC++ code that youcan then compileinto your applications. Visualization & GGE Demo J. Perl

  13. Further Resources Geant4 Tutorial CD: • http://geant4.slac.stanford.edu/g4cd/ Geant4 Visualization README file: • geant4/source/visualisation/README On-line Documentation on Geant4 Visualization: • http://cern.ch/geant4/G4UsersDocuments/UsersGuides/ForApplicationDeveloper/html/Visualization List of Visualization Commands: • http://cern.ch/geant4/G4UsersDocuments/UsersGuides/ForApplicationDeveloper/html/Visualization/UIcommands/vis.txt Another Presentation that Introduces Visualization,with More Focus on Controlling Visualization from C++: • http://www.ge.infn.it/geant4/training/portland/visualisation.pdf For Questions or Comments: Geant4 Visualization Online Forum: • http://geant4-hn.slac.stanford.edu:5090/HyperNews/public/get/visualization.html Visualization & GGE Demo J. Perl

  14. References • HepRep: a generic interface definition for HEP event display representableshttp://www.slac.stanford.edu/~perl/heprep • Fred: oh no, another event display (a HepRep client)http://www.fisica.uniud.it/~glast/FRED • WIRED3 HepRep Browserhttp://www.slac.stanford.edu/BFROOT/www/Computing/Graphics/Wired • DAWN Home Pagehttp://geant4.kek.jp/~tanaka/DAWN/About_DAWN.html • DAWNCUT Home Pagehttp://geant4.kek.jp/~tanaka/DAWN/About_DAWNCUT.html • DAVID Home Pagehttp://geant4.kek.jp/~tanaka/DAWN/About_DAVID.html • Satoshi Tanaka’s GEANT4 Ritsumeikan University Group Home Page (more information on DAWN, sample PRIM files, images, etc.)http://geant4.kek.jp/~tanaka/ • Geant4 Geometry Editor, GGE, part of the MoMo suite of Java toolshttp://erpc1.naruto-u.ac.jp/~geant4/Sources.html Visualization & GGE Demo J. Perl

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